Angina pectoris is pain or discomfort within the chest, typically provoked by exertion or anxiety. Angina is a sign that someone is at increased risk of heart attack, cardiac arrest or sudden cardiac death. The aim of treatment for angina is to control the symptoms and prevent a cardiovascular event such as a heart attack. In western medicine, treatment is usually with beta blockers, calcium channel blockers and nitrates (nitroglycerin). Suxiao jiuxin wan is widely used in China in conjunction with these western treatments. This review found weak evidence to suggest suxiao jiuxin wan alone or in combination with other anti-anginal drugs reduces the symptoms of angina. However, because of the quality of the research, the role of suxiao jiuxin wan is uncertain and more high quality trials are required to assess the effects of suxiao jiuxin wan in the long term.
Baca abstrak penuh
Suxiao jiuxin wan is widely used in China for angina pectoris.
Matlamat
The objective of this review is to determine the effects (benefits and harms) of suxiao jiuxin wan in the treatment of angina pectoris.
Kaedah Pencarian
We searched the Cochrane Central Register of Controlled Trials on The Cochrane Library (issue 4 2005), Medline (1995 to 2005), EMBASE (1995 to 2005), the Register of Chinese trials developed by the Chinese Cochrane Centre (to 2006), and the Chinese Biomedical Database (1995 to 2005), and handsearched 83 Chinese journals. We also searched reference lists, databases of ongoing trials and the Internet. Date of last search: November 2005.
Kriteria Pemilihan
Randomised controlled trials of suxiao jiuxin wan compared to standard treatment in people with angina. Studies with a treatment duration > 4 weeks were included.
Pengumpulan Data dan Analisis
Two reviewers independently applied the inclusion criteria, assessed trial quality and extracted the data.
Keputusan Utama
Fifteen trials involving 1776 people were included. There was weak evidence that suxiao jiuxin wan compared with nitroglyerin (xiaoxintong) improved ECG measurements (RR 1.16, 95% CI 1.05 to 1.27), reduced symptoms (RR 1.09, 95% CI 1.04 to 1.13), reduced the frequency of acute attacks of angina (difference in means -0.70, 95% CI -0.90 to -0.50), reduced diastolic pressure (difference in means -3mmHg, 95% CI -5.73 to -0.27) and reduced the need for supplementary nitroglycerin (difference in means of -0.60, 95% CI -0.94 to -0.26). There was also weak evidence that suxiao jiuxin wan compared with Salvia miltiorrhiza (danshen) reduced symptoms (RR 1.21, 95% CI 1.11 to 1.31) and improved ECG measurements (RR 1.55, 95% CI 1.30 to 1.84). There was no significant difference when comparing suxiao jiuxin wan with isosorbide dinitrate (xiaosuanyishanlizhi) both for ECG improvement (RR 1.34, 95% CI 0.91 to 1.98) and for symptom improvement (RR 1.11, 95% CI 0.86 to 1.43).
Kesimpulan Pengarang
Suxiao jiuxin wan appears to be effective in the treatment of angina pectoris and no serious side effects were identified. However, the evidence remains weak due to poor methodological quality of including studies.
